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Finding the Fourth Proportional to 981.27, 1,470.02 and 548.73

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Solution

The fourth proportional to 981.27, 1,470.02 and 548.73 is: 822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    981.27 : 1,470.02 = 548.73 : x
  2. Step 2: Convert to fraction form
    981.27/1,470.02 = 548.73/x
  3. Step 3: Cross multiply
    981.27x = 1,470.02 × 548.73
  4. Step 4: Simplify right side
    981.27x = 806,641.33
  5. Step 5: Solve for x
    x = 806,641.33/981.27
  6. Step 6: Final answer
    x = 822.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.